Question

7.
The perimeter of a rectangle is 70 cm. If its breadth is 5 cm less than the length, find its area
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Answer 1

Step-by-step explanation:

let the of rectangle length be x

perimeter=2(length+breadth)

70 =2[(x)+(x-5)]

70 =2(x+x-5)

70 =2(2x-5)

70 =4x-10

70+10=4x

80 =4x

x =80/4=20

length=20 cm,breadth=20-5=15 cm

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